Stapling device



April 2, 1963 H, RusKlN 3,083,367

STAPLING DEVICE Filed Feb. 8, 1960 5 Sheets-Sheet l HENRY RUSK//V WiL/4MM ATTORNEV H. RUSKIN STAPLING DEVICE April 2, 1963 5 Sheets-Sheet 2 Filed Feb. 8, 1960 INVEN TOR HENRY RUS K /N ATTORNEY H. RUSKIN STAPLING DEVICE April z, 1963 5 Sheets-Sheet 3 Filed Feb. 8, 1960 INVENTOR. HENRY RUSK//V BY o9. L/Qs /3,.

ATTORNEY April Z, 1963 H. RUSKIN 3,083,367 STAPLING DEVICE Filed Feb. 8, 1960 5 Sheets-Sheet 4 IMI HENRY @USK/N BY QL/@L B ,La

ATTORNEYl April 2 1963 H. RUsKlN 3,083,367

STAPLING DEVICE Filed Feb. 8, 1960 5 Sheets-Sheet 5 1N VEN TOR. HENRY RUS K /N ATTORNEY United States Patent O M $33,367 SiAlBlillalS Henry Ruskin, Bayside, NX., assi.J cr to Ace Fastener Corporation, Chicago, lil., .a corporation of illinois Filed 8, web, Ser. No. 7,55@

Claims. (Qi. 1 3) This invention relates to a stapling device having a number of specific improvements which will be set forth in this specification. -While these improvements are important singly they also, in combination, contribute to the production of a stapling device which is extremely compact, easily operable, and simple to manufacture.

The novel features of the stapling device of this invention are (l) the means for loading the device and automatically retracting the follower upon such loading, (2) the means employed for simple replacement of the follower retracting member, (3) the means used for aligning the rail within the magazine, (4) means used to assemble the top member to the cap of the stapling device, and the means used to position the driver upon the cap of the stapling machine.

The means -for loading may be briefly described as including, in a stapling machine having an open magazine, follower guide means therewithin, a follower operatively connected to said follower guide means, and a cover normally disposed upon the magazine and pivotally movable with respect thereto, the improvement which comprises spring means in operative relationship with the follower normally urging the follower forwardly, and flexible follower retracting means (preferably a doubled metal strip) operatively connected to the follower and the cover.

The means employed for simple replacement of the follower retracting member may be brieliy described as comprising means for disengaging one end of the follower retracting means (preferably from the cover).

The means employed for aligning the rail within the magazine may be described as comprising a casing having its lbase split into right and left lateral portions, preferably longitudinal and of equal size. Each of the right arid left portions of the casing are provided with a laterally disposed opening therewithin. A rail is secured Within the casing and has a pair of oppositely disposed locating lugs each adapted to lit into one of the openings within the casing. Since only the base of the casing of the magazine is split into the aforesaid right and left portions the casing is laterally deformable prior to securement of the rail within the casing, and this fact permits the rail to be positioned accurately within the casing, t-he lugs, as will be described subsequently, permitting simple location of the rail within the casing.

In the preferred modification of this structure the upper portion of each of the lugs is offset from the base portion (preferably by 90 degrees). The offset portion of the lugs is designed to bear against guide means which are provided extending upwardly from the base.

The means employed to assemble the top member to the cap of the stapling machine comprise a cap member provided with a first opening and a second opening (the second opening being preferably paired). An upwardly movable member is disposed adjacent the tirst opening and a top member is provided overlying the cap member. The top member is formed with a first and a second downwardly depending member (the second downwardly depen-ding member being preferably paired) which are disposable within the respective openings within the cap. The irst downwardly depending member has a recess upon the leading side thereof which is adapted to accommodate the adjacent portion of the wall of the cap. The downwardly depending member disposable within the 3,983,367v Patented Apr. 2, 1963 second opening is initially slidably movable therein. The upwardly movable member is adapted to abut the trailing side of the first downwardly `depending member when the adjacent portion of the cap is within the recess so as to hold the top member in place upon the cap.

l"libe means used to position the driver upon the cap of the stapling machine comprise a cap construction having a pair of laterally spaced lugs upon the underside thereof with an offset driver blade disposed between the lugs.

In addition to the apparatus constructions claimed in this application, the application also includes claims to the novel method of securing the rail to the magazine of the machine so as to position the parts accurately and to the novel method of securing the top member 0f the cap of the stapling machine.

Aside from the objects of this invention set forth above other objects and advantages of the construction of this invention and the methods claimed lwill be apparent to the reader as this description proceeds.

The invention will be further described `by reference to the accompanying drawings which are made a part of this specification.

FIG. 1 is a side perspective view of a stapling machine made in accordance with this invention.

FIG. 2 is a side View, partly in section, of the stapling machine shown in FIG. 1 showing the top member and cap construction of this invention.

FIG. 3 is a sectional view of the stapling machine shown in FlG. 2 taken along lines 3 3 of FIG. 2.

FIG. 4 is a side view of the stapling machine similar to that of FIG. 1 but with a portion about the guide members upon the base of the machine broken away to show the internal construction.

FIG. 5 is a detail sectional view of the stapling machine shown in FIG. 4 taken along lines 5 5 of FIG. 4.

FIG. 6 is a detail sectional view of the stapling machine shown in FlG. 4 taken along lines 6 6 of FIG. 4.

FIG. 7 is a side view of a stapling machine made in accordance with this inventori with the cover thereof partially removed from its normal position above the magazine so as to show the details of construction, portions of the cover are broken away to show the internal construction.

FIG. 8 is a sectional view of the stapling machine shown in FIG. 7 taken along lines 8 8 of FIG. 7.

FIG. 9 is a sectional View of the stapling machine shown in FIG. 7 taken along lines 9 9 of FIG. 7.

FlG. 10 is a side perspective view of the rail used within the magazine casing of the stapling machine of this invention.

FiG. 11 is a side perspective view of the magazine casing of the stapling machine of this invention.

FIG. 12 is a side perspective view of the assembled magazine casing and rail of the stapling machine of this invention with portions of the magazine casing broke-n away to show the internal construction.

FIG. 13 is a fragmentary side view of a stapling machine made in accordance with this invention with the cover thereof in partially open position with respect to the magazine.

FlG. 14 is a sectional view of the stapling machine shown in FG. 13 taken along lines 14 l4 of FIG. 13.

FIG. 15 is a sectional View of the stapling machine shown in FlG. 14 taken along lines 15 ll5 of FIG. 14.

FIG. 16 is a fragmentary sectional View of the magazine and associated parts of the stapling machine shown in FIG. 14 taken along lines M ld of FIG. 14.

FIG. 17 is a sectional view of the stapling machine shown in FIG. 14 taken along lines 17 l7 of FIG. 14.

FIG. 18 is a bottom plan View of the stapling machine of this invention with the bottom cover portion of the machine removed to show the parts involved.

FIG. 19 is a bottom plan view of the magazine of the stapling. machine of this invention.

Referring now to the specific form of the stapling machine shown in the drawings for a detailed description thereof, the machine 11 of this invention is formed with a'base 12, an anvil 13 disposed upon base 12, a pair of guide members 14 extending upwardly from base 12, and an open magazine pivotally connected to base 12.

Anvil 13 bears a pair of spaced downwardly depending supports 16 which extend through openings within base 12. A spring 17 is disposed between supports 16. Anvil 13 is movable upon base 12 and a pair of mating detent portions 40b and41b are provided on the base 12 and spring 17 so that anvil 13 assumes two` specific positions upon base 12,. Y

Anvil 13 bears pinning recess 18` and clinching recess 19 (FIG. 1) which may be selectively positioned beneath magazine 15. Y

An opstanding connecting member 20 is provided and is divided intobifurcatedl portions 25. Each of portions 25 is partially disposed within a recess 26 within base 12.

A securing member 27, a part of guide members 14 and joining said members to one another, is also provided which-is secured to base 12 by rivets 28. Securing member 27 also bears recesses 29 alignable with recesses 26.

A lower support member 31 is disposed between bifurcated portions 25 of connecting member 2G. Support member'l is supported in recess 26 in base 12 by secur ing member 27.

An upper support portion is also provided between the bifurcated portions 25 of connecting member 20. Upper support portion 32 is an integral part of connecting member 20.

`A spring 33 is disposed between lower support member 31 and upper support member 32. The entire spring and support members assembly is supported in place by securing'member 27 beneath base 12.

`Recesses 26 and 29 within base 12 are slightly larger Vthan ythe portions of member 20 disposed therewithin so that member 20'is pivotally movable with respect to base 12.

The upper parts of eachof members 25 are formed into hook portions'34 (FIG. 17). Hook portions 34 are disposable within recesses 35(FIG. 14) located at the base 36 of magazine 15.

A front foot 37 and-a rear foot 3S are secured .to base l 12 bypsecuring members 39.

A bottom cover 22 is formed with a tongue 40m (FIG.

15) which is disposable'kwithin-a recess 41a located withinfront foot 37. Bottom cover 22 is alsoformedwith a 'pair of springable clips 24 which are secured to downw'ardly depending portion of securing member 27 when the cover is in place.V

Magazine 15 is formed of` casing 4Q' and rail 47. Casingv40 is formed witha base 41 which isV divided into right andleft portions 42 and 43. Portions 42 and 43 are joined to one another by front portion 44. Y

' Casing 40 is alsoprovided with` lateral openings 45 within portion 42 and additional lateral openings 46 within portionY V43. Rail 47 is disposed within casing 40. Rail 47 is formedwith locating lugs 48 which are adapted to be at least partially disposed within openings and 46. Each of lugs 48 is formed of a base portion 49l and an 'offset upper portion 50.

Rail 47 is secured to casing 40 by rivets 51a (FIGS. 14, 16 and 19) and also by portions9'4 of casing 49 being .driven into holes 95 in rail 47.

Base 41 of casing -40 is also provided with slots 35 therewithin. Rail -47 is also provided with slots 52 therewithin. Slots 35 and 52 are adapted to partially register with one another when rail 47 is properly positioned upon casing 40 but slots 35 and 52 are also partially out of registrationas shown at 53 (FIGS. 14 and.19).V Hook portions 34 of connecting member 20 are adapted to be disposed within the registering portions of slots 35 and 52 with hook portions 34 abutting only the forward portions of the slots in normal latched position.

Rail 47 is valso formed with a rear upstanding portion 54 which is provided with a hole 55 therethrough. Rail 47 also bears a front upstanding portion 56 which is also provided with a hole 57 therethrough.. Rail 47 also has opstanding sides 58. A pair of depressions 65 partially extending through casing 40 at the interior thereof are likewise provided.

When rail 47 is properly aligned within casing 40 a space 59 is provided between the forward portionV of casing 40 and the front of rail 47. Space 59 registers with space 66 within casing 4t) (FIG. 19) so as to provide a staple ejecting channel.

A followerV guidel 60 is partially disposed within holes 55 and 57 and is held in position by snap ring 67. A fol-` lower 62 is also disposed upon rail 47 and upon follower guide 60. A follower spring is also disposed upon follower guide 60 behind follower 62.

A follower retractor `63- (FIGS. 7, 8, and 13) is formed of a doubled eXible element and is secured to follower 62 by rivet 64.

A cover 68 is pivotally disposed above magazine 15. Cover 68 is secured to magazine 15 by hinge pin 83 which passes through mating openings provided within cover 68, magazine 15, guides 14 and cap 79.

Cover 68 is also formed with depending sides 70 and 71. Side 70 of cover 68 is provided with spaced openings -72 and '73 and side 71 of cover 68 is provided with spaced openings 74 and 75. Clips 76 and 77 are also provided. The side portions of cli-ps 76 and 77 are disposed within openings 72-74 and '73-75. The body portion 69 of clip 77 is disposed within the doubled portion of follower retractor 63 (FIG. 8). The side portions of clip 76 are adapted to abut slots 65 within casing 40 so as to removably secure cover 68V to magazine 15.

A tongue 78 is formed at the forward portion of cover 68.

A cap 79 is disposed above cover 68 and is provided with a tirst opening 80 and a spaced pair of second openings 81. An upwardly movable member 82 is part of cap 79 and is disposed adjacent irst opening 80. Hinge pin 33V also passes through cover 68 and cap 79.

Cap 79 is also provided with lugs 84. Driver blade 85 is disposed between lugs 84 and is secured to cap 79 Iby holding extrusions 86. Driver blade 85 is also provided with a slot 87 through which tongue 78 passes.

Ram spring 88 is secured to cap 79 by rivets 89 and bears against the top of cover 68.

Top member 96H5 disposed above cap 79 and is formed with a first downwardly depending member 91 and a pair ofV spaced second downwardly depending members. Member 91 is provided with a recess 93 upon the leading side thereof (FIG. 2). Member 91 is also disposable within opening 80 while members 92 are each disposable within an opening 81. Openings 81 are longer than each of members 92 while a wall of cap 79 can enter recess 93. This permits sliding movement of ltop member along cap 79-to secure two parts to one another as will be subsequently explained.

The foregoing description sets forth the parts of the stapling machine of this invention. The operation thereof will now be explained.

The machine is loaded by moving cap 79 upwardly which causes the side portionsV of clip 76 to leave openings 65 within casing 40. This permits pivotal movement of cap 79, cover 68 and top member 96 (since the parts are secured to one another) and exposesrail 47 within magazine 15. Since follower retractor 63 is secured Ito cover 68 the movementor the parts causes retractor 63 to exert a rearward pull against follower 62 and moves this memberV rearwardly against the tension of follower spring 61.

The machine may now be loaded by placing staples (not shown) over rail 47. After this is done cap 79 is moved downwardly until the side portions of clip 76 snap into openings o within casing itl. This movement also releases the tension of retractor d3 from follower 62 permitting spring el to move follower 62 forwardly until stopped by the presence of staples in magazine l5'. The machine can then be used to staple articles by pressing upon top member 9d which moves driver S5 downwardl and expels a staple into the work. The release of pressure upon top member 9d causes this member to assume its normal position because of the upward pressure exerted by spring SS.

When driver is removed from the staple channel follower spring 6l moves follower e?. forwardly and positions another staple for operatic-n.

it sometimes happens that follower retractor 63 breaks 4in operation of the machine and must be replaced. The construction of this machine is such that the replacement is a very simple matter. Follower retractor 63 is -removed from its secured position to cover e3 by moving the slides of clip 77 ltowards one another. The sides can now be removed from openings 73-75 and retractor 63 disengaged from clip 77.

Snap ring 7 can then be removed from follower guide 6d and follower guide 6h moved longitudinally so as to remove it from openings 55 and S7. The assembly consisting of follower and follower retractor 53 can then be removed from follower gnide et) and a new assembly put in its place. Guide 6@ can then be reinserted into openings 55 and S7, snap ring 67 placed into position and the replacement is completed.

The stapling machine of this invention can be easily converted into a tacker by merely pulling upon magazine l5. rIbis exerts pressure upon hook portions 3d and causes connecting member 2l? to move pivotally. This disengages hook portions and permits base l2 to be moved out of alignment with magazine l5' to permit tacking. if the device is again to be used for stapling then realignment of base and magazine will cause hook portions 34 to again snap into position and lool; the machine into stapling relationship.

The assembly of the stapling machine of this invention will now be described so as to illustrate other features of this invention.

Before proceeding with the description of the assembly the reader is advised that the specific order of assembly of parts set forth herein need not be strictly followed. Persons skilled in this `art could marie variations which would still fall within the scope of this invention.

The assembler of the device of this invention takes base 2.2 and positions connecting member 2d, lower support member 3l, upper support member portion 32 and spring 33 in proper relationship upon base l2. Guide members 14 having securing por-tion 27 thereupon is assembled to base i3 from the bottom and is riveted into place by rivets ZS.

Anvil 13 is then brought into position upon base l2 with supports lo thereupon disposed in the proper recesses provided in base l2. Spring i7 is then placed into position between supports l5.

Front foot 37 and rear foot 33 are then placed into position beneath base l2 and secured into place.

Cap member 79 is then taken by the assembler. Briver S5 is placed into position between lugs 24 within a bending fixture. The be iding fixture also positions driver 85 into its proper position beneath cap 79. The lixture then bends lugs 34; about driver d5' and drives a portion of cap 7? into driver 8S forming holding extrusions 8d which firmly position driver S5 into place. Ram spring SS is then placed into position beneath cap 79 and riveted into place by rivets Si Top member 9i? is then placed into position upon cap 79. First downwardly depending member 9i is placed within irst opening Sil within cap member 79 with the recess within the leading side of member 91 adjacent the upper wal-l of member Qd. Second downwardly depending members 92 of top member gli are placed within the larger part of each of openings 81 within cap member 79. Top member 9@ is then slid along cap 7 9 in the direction of the arrow shown in FIG. 2 until the abutting portion of the wall of cap 79 is disposed within recess 93 as shown in PEG. 2. Upwardly movable mem-ber i2 is then moved in the direction shown by the arrow in FG. 2 adjacent movable member d2 into abutting relationship with member Ml to firmly position top member 9b upon cap 79.

ln the preferred construction of the parts each of openings Sl are narrower in the direction of initial movement of top member 9d upon cap 79 so that the sides of the openings Sil cut into the members 92 and aid in proper positioning.

The cover 63 is then obtained by the assembler. Cover 65 is placed in side position and tongue 73 placed within slot 37. Cover ed is then turned dat `so as to lock the parts into operative relationship with one another.

Casing di) of magazine l5 is then obtained 'by the assembler. Rail i7 is then obtained and right portion 42 and left portion 43 of casing 4t) spread apart so that lugs i3 of rail 47 can be disposed within openings 45 and 46. After the parts are placed together then assembly of magazine and rail is placed into a locating xture. The fixture spaces the front part of rail /137 from the front of casing It@ and positions the sides of casing nl against intermediate portion Sie of rail 47 (HG. l2).

When the parts are thus properly located the parts are doweled into place by driving portions of the casing 4d into holes previously placed within rail 47. After this is done the rail i7 is permanently positioned within casing d@ by rivets Sie. This also prevents portions i2 and i3 from being spread apart again.

The above assembly also causes upper portions Si) of lugs d8 to extend beyond the outer walls of the magazine. Portions Sil are then utilized of journaling members abutting gui es ld and thus properly positioning magazine l5 with respect to anvil l.

From the above description the reader will note that the rail 47 is positioned within casing 4d by using the interior spacings only. Thus material thickness variations will not interfere with accuracy required.

After the magazine-rail assembly including casing d@ and rail i7 is put together the yfollower 62 is then obtained and assembled to follower retractor 63 `by rivet 64 so as to produce an assembly consisting of follower and retractor. Snap ring 67 is then slipped upon follower guide et? lbehind the recess (not shown) within guide o@ for the reception of ring 67. Follower guide et) is then put through hole 57 in rail 47 and moved forwardly as far as it can go. Follower e2 is then disposed upon guide et) and spring 6l. disposed behind follower 62. The rear end portion of follower guide o@ is then placed withinphole 55 and guide oil moved rearwardly until the recess within guide o@ (not shown) is disposed just behind front tab 56 of rail 47. Ring 67 is then snapped into position to hold the parts in place.

Clip 76 is then assembled `to cover 68 by moving the sides thereof inwardly and then releasing the sides into openings 72-74. The body portion 69 of clip 77 is placed within the doubled portion of retractor 63 and clip 77 then secured to cover 63 by moving the sides thereof inwardly and releasing them into openings 73-75 so that retractor 63 is in place.

The mating openings within guide members ld, magazine l5 and cap 79 are aligned and hinge pin 83 driven through the openings to secure the parts to one another.

The materials used in the construction of the parts of the stapling machine of the instant invention are the usual materials employed for such purposes or materials which could be utilized.

The preferred material for top member 9i) is impact resistant plastic but the member could be made of metal,

wood, or similar material. The follower retractor 63 is preferably made of flexible metal shim stock but could also be made of tear resistant plastic such Mylar or it could be made of fabric, rubber, etc.

The remaining parts of the machine are preferably made of metal having the properties required by the parts.

The foregoing specific embodiments of this invention as set forth in lthe specification herein are for illustrative .purposes and for purposes of example only. Various )changes and modifications could obviously be made within the spirit and scope of this invention and would occur to those skilled in this art.

l claim:

l. A stapling machine comprising, in combination, a base, an anvil and guide means upon said base, an open magazine pivotally connected to said base, provided with lateral lug accommodating openings therein and spaced from said base, spring means operatively connected to said magazine and to said base7 said magazine having a rail secured therewithin formed with a pair of oppositely disposed locating lugs adapted to lie adjacent the outer surfaces of opposite sides of said magazine and abut said guide means, follower guide means disposed within said magazine, a follower operatively connected to said follower guide means, a cover normally disposed upon said magazine and pivotally movable with respect thereto, spring means in operative relationship with said follower normally urging said follower forwardly, disengageable flexible follower retracting means operatively connected to said follower and said cover, complementary fastening members upon the sides of said magazine and said cover, a cap pivotally connected to said `cover and overlying the same, spring means operatively connected to said cover and to said cap, a pair of laterally spaced lugs upon said cap, a bent driver blade disposed ybetween said lugs, means connecting one end of Said cover to said driver blade, said cap being also provided with a first opening and a second opening therewithin and a member adjacent said first opening; a top member formed with a first and a second downwardly depending member smaller than said openings disposable Within the respective openings with- -in said cap, the downwardly depending member disposable within said above-named first opening having a recess on the leading side thereof adapted to accommodate the adjacent portion of said cap, said adjacent member being adapted to abut the trailing side of said first downwardly depending member when the adjacent portion of said cap is within said recess so as to hold said top member in place.

2. A stapling machine comprising, in combination, a base, an anvil and upstanding guide means upon said base, an open magazine provided with a discharge opening pivotally connected to said base, spring means operatively connected to said magazine and to said base and normally holding said magazine in spaced relationship with said base, a rail secured within said magazine having two spaced pairs of oppositely disposed locating llugs adapted to lie adjacent the outer surfaces of opposite sides of said magazine and abut said .guide means, said magazine being also provided with two spaced pairs of oppositely disposed-lateral recesses permitting said lugs to pass therethrough, a follower guide rod secured within said magazine, a follower movable upon said follower guide rod, a cover normally disposed upon said magazine and pivotally movable with respect thereto, coil spring means upon said follower guide rod disposed behind said follower and normally urging said follower. towards the discharge opening of said magazine, a removable flexible follower retractor secured to said follower and to said cover, complementary fastening members upon the sides of said magazine and the sides of said cover, a cap pivotally connected to said cover and overlying the same, leaf spring means connected to said -cap and slidably .bearing against said cover, normally holding said cover in spaced relationship to said cap, a pair of laterally spaced lugs upon the underside of said cap, a bent staple driver having a driving portion and a holding portion disposed between said lugs, the driving portion being disposable within the discharge opening of said magazine, means holding the holding portion to said cap, means slidably connecting one end of said cover to the driving portion of said driver blade, said cap being also provided With a first opening and a pair of spaced second openings therewithin, and a member adjacent said first opening; a top member formed with a rst downwardly depending member and a pair of spaced second downwardly depending members disposable within the respective openings within said cap, and Vsmaller than said openings, the downwardly depending member disposable within said above-named first opening having a recess on the leading side adapted to accommodate the adjacent portion of said cap, said adjacent member :being adapted to abut the ltrailing side of said first downwardly depending member when the adjacent portion of said cap is Within said recess so as to hold said top member in place.

3. A stapling machine comprising, in combination, a

base, an anvil and a spaced pair of upstanding guide means upon said base, an open magazine in spaced relationship with said base provided with a discharge opening therewithin, spring means operatively connected to said magazine and to said base, a rail secured within said magazine having two spaced pairs of oppositely disposed locang lugs adapted to lie adjacent the outer surfaces of opposite sides of said magazine and abut said guide means, said magazine being also provided with two spaced pairs of oppositely disposed lateral recesses permitting said lugs to pass therethrough; a follower guide rod secured within said magazine, a follower longitudinally movable upon said follower guide rod, a cover normally disposed upon said magazine and pivotally movable with respect thereto, a tongue portion on one end of said cover, a coil spring upon said follower guide rod disposed behind said follower and normally urging said follower toward the discharge opening of said magazine, a flexible follower retractor formed of a doubled member, the free edges of said follower retractor being permanently secured to said follower, a removable clip secured to said cover and to said folded edge portion of said follower retractor, complementary fastening members upon the sides of said magazine and the sides of said cover; a cap pivotally connected to said cover and overlying the same, leaf spring means connected to the underside of said cap, downwardly depending therefrom, and slidably bearing against said cover, said leaf spring means normally holding said cover in spaced relationship to said cap, a pair of laterally spaced lugs upon the underside of said cap, a bent staple driver having a driving portion and a holding portion disposed between said lugs, the driving portion of said staple driver being disposable within the discharge opening of said magazine, means holding the holding portion of said staple driver to said cap, said staple driver being also provided with a slot in the driving portion thereof, said slot slidably accommodating the tongue of said cover so as to connect one end of said cover to the driving portion of said driver blade, said cap being also provided `with a first opening and a pair of spaced second openings therewithin, and a member adjacent said first opening; a top member formed with a first downwardly depending member and a pair of spaced second downwardly depending members Vdisposable within the respective openings within said cap i and smaller than said openings, the downwardly depending member disposable within the above-named first openingv having a recess on the leading side adapted to accommodate the adjacent portion of said cap, the downwardly depending members disposable within said above-named second openings being initially slidably movable therewithin, said adjacent member being adapted to a-but the trailing side of said first downwardly depending member when the adjacent portion of said cap is within said recess so as to hold said top member in place.

4. A stapling machine element comprising a cap mem- Iber provided with a iirst opening and a second opening, a lock member secured to said cap and adjacent said iirst opening; a top member overlying said cap member formed with a first and a second downwardly depending member disposed within the respective openings within said cap, the downwardly depending member disposed within said second opening being shorter than the length of said opening, the downwardly depending member disposed within said above-named iirst opening having a recess on the leading side 4thereof accommodating the adjacent portion of said cap, said lock member being upwardly movable and abutting the trailing side of said iirst downwardly depending member so as to hold said top member in place upon said cap.

5. A stapling machine as set forth in claim 4 wherein a pair of spaced second openings and a pair of second downwardly depending members are provided.

6. A magazine for a stapling machine comprising a casing having its base split into right and left portions, each f said right and left portions being provided with -a laterally disposed opening therewithin, a rail secured within said casing having a pair of oppositely disposed locating lugs each adapted to t int-o one of said openings within said casing, said casing Ibeing laterally deformable prior to securement of said rail therewithin so :as to permit insertion of said rail within said magazine, the lugs upon said rail further permitting simple location of said rail with respect to said casing.

7. A magazine for ia stapling machine comprising a casing having its base longitudinally split into equal right and left halves, each of said right and left halves being provided with a pair of spaced laterally disposed opening therewithin, :a rail secured Within said casing having two pairs of oppositely disposed locating lugs wherein each lug is adapted to iit into one lof said openings Within said casing, said casing being laterally deformable prior to :securement of said rail therewithin so las to permit insertion of said rail within said magazine, the lugs upon said rail further permitting simple location of said rail with respect to said casing.

8. In a stapling machine having a base, an anvil and guide means upon said base, the improvement which comprises ia magazine comprising la casing having its base split into right and left portions, each of said right and left portions being provided with a laterally disposed opening therewit-hin, a rail secured within said casing having a pair of oppositely disposed locating lugs each adapted to iit into one `of said openings Within said casing, each iof said lugs having la base portion |and an offset upper portion, said casing being laterally deformable prior to securement of said rail therewithin so as to permit insertion of said rail within said magazine, fthe lugs upon said rail further permitting simple location lof said rail With respect .to said magazine, the offset upper portions yof said lugs being adapted to fbear against said guide means.

References Cited in the le of this patent UNITED STATES PATENTS 2,271,926 Pankonin Feb. 3, |1942 2,304,293 Wille Dec. 8, 1942 2,343,932 Ruskin Mar. 14, 1944 2,551,898 Nyberg May 8, 19511 2,624,046 Nyberg Jan. 6, 1953 

1. A STAPLING MACHINE COMPRISING, IN COMBINATION, A BASE, AN ANVIL AND GUIDE MEANS UPON SAID BASE, AN OPEN MAGAZINE PIVOTALLY CONNECTED TO SAID BASE, PROVIDED WITH LATERAL LUG ACCOMMODATING OPENINGS THEREIN AND SPACED FROM SAID BASE, SPRING MEANS OPERATIVELY CONNECTED TO SAID MAGAZINE AND TO SAID BASE, SAID MAGAZINE HAVING A RAIL SECURED THEREWITHIN FORMED WITH A PAIR OF OPPOSITELY DISPOSED LOCATING LUGS ADAPTED TO LIE ADJACENT THE OUTER SURFACES OF OPPOSITE SIDES OF SAID MAGAZINE AND ABUT SAID GUIDE MEANS, FOLLOWER GUIDE MEANS DISPOSED WITHIN SAID MAGAZINE, A FOLLOWER OPERATIVELY CONNECTED TO SAID FOLLOWER GUIDE MEANS, A COVER NORMALLY DISPOSED UPON SAID MAGAZINE AND PIVOTALLY MOVABLE WITH RESPECT THERETO, SPRING MEANS IN OPERATIVE RELATIONSHIP WITH SAID FOLLOWER NORMALLY URGING SAID FOLLOWER FORWARDLY, DISENGAGEABLE FLEXIBLE FOLLOWER RETRACTING MEANS OPERATIVELY CONNECTED TO SAID FOLLOWER AND SAID COVER, COMPLEMENTARY FASTENING MEMBERS UPON THE SIDES OF SAID MAGAZINE AND SAID COVER, A CAP PIVOTALLY CONNECTED TO SAID COVER AND OVERLYING THE SAME, SPRING MEANS OPERATIVELY CONNECTED TO SAID COVER AND TO SAID CAP, A PAIR OF LATERALLY SPACED LUGS UPON SAID CAP, A BENT DRIVER BLADE DISPOSED BETWEEN SAID LUGS, MEANS CONNECTING ONE END OF SAID COVER TO SAID DRIVER BLADE, SAID CAP BEING ALSO PROVIDED WITH A FIRST OPENING AND A SECOND OPENING THEREWITHIN AND A MEMBER ADJACENT SAID FIRST OPENING; A TOP MEMBER FORMED WITH A FIRST AND A SECOND DOWNWARDLY DEPENDING MEMBER SMALLER THAN SAID OPENINGS DISPOSABLE WITHIN THE RESPECTIVE OPENINGS WITHIN SAID CAP, THE DOWNWARDLY DEPENDING MEMBER DISPOSABLE WITHIN SAID ABOVE-NAMED FIRST OPENING HAVING A RECESS ON THE LEADING SIDE THEREOF ADAPTED TO ACCOMMODATE THE ADJACENT PORTION OF SAID CAP, SAID ADJACENT MEMBER BEING ADAPTED TO ABUT THE TRAILING SIDE OF SAID FIRST DOWNWARDLY DEPENDING MEMBER WHEN THE ADJACENT PORTION OF SAID CAP IS WITHIN SAID RECESS SO AS TO HOLD SAID TOP MEMBER IN PLACE. 